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參數(shù)資料
| 型號： | TSC73M223 |
| 廠商： | TDK Corporation |
| 英文描述： | 1200 Baud FSK Modem |
| 中文描述： | 1200波特率FSK調(diào)制解調(diào)器 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 45K |
| 代理商： | TSC73M223 |
73M223
1200 Baud FSK Modem
February 1998
DESCRIPTION
The 73M223 modem device receives and transmits
serial and binary data over existing telephone
networks using Frequency Shift Keying (FSK). It
provides the filtering, modulation, and demodulation
to
implement
a
serial,
communication channel. The 73M223 employs the
CCITT V.23 signaling frequencies of 1302 and 2097
Hz, operating at 1200 baud, and is intended for half
duplex operation over a two-line system.
asynchronous
data
The 73M223 provides a cost-effective alternative to
existing modem solutions. It is ideally suited for R.F.
data links, credit verification systems, point-of-sale
terminals, and remote process control.
CMOS technology ensures small size, low-power
consumption and enhanced reliability.
FEATURES
Low cost FSK Modem
1200 baud operation
CMOS switched capacitor technology
Built-in self-test feature
On-chip filtering, and
Modulation/Demodulation
Uses CCITT V.23 frequencies
On chip crystal oscillator
Low power/High reliability
Does not require a microprocessor
10 mW @ 5 V supply
16-pin plastic packages
BLOCK DIAGRAM
OSC1
OSC2
OSC
13
14
TXD
12
7(67
TEST
7;
7
16
15
PHASE
COHERENT
WAVE
SYNTHESIZER
PROGRAMMABLE
DIGITAL
DIVIDER
DIGITAL
TIMING
SIGNALS
SYNC
PHASE LOCKED
LOOP
TXA
CLK
9
15
SYNC
6<1
7(67
TEST
SLICER
RXA
FIL
5
2
DIGITAL
DEMODULATOR
DIGITAL
LP
FILTER
DELAY
TEST
7(67
11
RXD
TEST
6
RANDOM
SEQUENCE
GENERATOR
SWITCHED CAP
BANDPASS
FILTER
4
RXF
3
CAP
1
VDD
8
VSS
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